Those lights aren't strong enough for a reef (notice the picture is a freshwater tank). Compact fluorescents are weak lights -- look into a set of T5s or metal halide instead. You want to aim for at least 4 watts per gallon.
Put rock in the tank first, so the rock sits on the bottom. Then put the sand around it. If you put the rock on top of the sand, you risk a rockslide when the sand shifts.
You don't need to use live sand, just use dry bagged aragonite sand. That sand will become live as soon as you add live rock. You can use the same stuff in the fuge.